package com.atguigu.gmall.mq.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class DeadLetterMqConfig {
    // 声明一些常量
    public static final String exchange_dead = "exchange.dead";
    public static final String routing_dead_1 = "routing.dead.1";
    public static final String routing_dead_2 = "routing.dead.2";
    public static final String queue_dead_1 = "queue.dead.1";
    public static final String queue_dead_2 = "queue.dead.2";

    @Bean
    public DirectExchange exchange() {
        return new DirectExchange(exchange_dead,true,false,null);
    }

    @Bean
    public Queue deadQueue1() {
        // 设置如果队列一 出现问题，则通过参数转到exchange_dead，routing_dead_2 上！
        Map<String,Object> map = new HashMap<>();

        // 设置死信路由
        // 参数绑定 此处的key 固定值，不能随意写
        map.put("x-dead-letter-exchange",exchange_dead);
        map.put("x-dead-letter-routing-key",routing_dead_2);
        // 设置超时
        map.put("x-message-ttl", 1000*10);

        // 队列名称，是否持久化，是否独享、排外的【true:只可以在本次连接中访问】，是否自动删除，队列的其他属性参数
        return new Queue(queue_dead_1,true,false,false,map);
    }

    @Bean
    public Queue deadQueue2() {
        // 队列名称，是否持久化，是否独享、排外的【true:只可以在本次连接中访问】，是否自动删除，队列的其他属性参数
        return new Queue(queue_dead_2,true,false,false,null);
    }

    @Bean
    public Binding binding1() {
        return BindingBuilder.bind(deadQueue1()).to(exchange()).with(routing_dead_1);
    }

    @Bean
    public Binding binding2() {
        return BindingBuilder.bind(deadQueue2()).to(exchange()).with(routing_dead_2);
    }
}
